Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Akiyoshi, Kinda"'
Publikováno v:
Japanese Journal of Radiological Technology. 69:49-57
PURPOSE The wavelet transform is a newly developed signal-processing tool that decomposes a signal into various levels of resolution. The wavelet transform based noise reduction has the characteristics of optimally separating signal from noise, prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20fbc6bb363949688755efbd3face4ab
https://doi.org/10.6009/jjrt.2013_jsrt_69.1.49
https://doi.org/10.6009/jjrt.2013_jsrt_69.1.49
Publikováno v:
Japanese Journal of Radiological Technology. 66:201-210
Generally, the Chang method depends on counts for the attenuation correction (AC) method in brain perfusion single-photon emission computed tomography (SPECT), because the head outlined for a uniform attenuation coefficient map is set to the sinogram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ced63cc52523d32641e3fd28e5f06051
https://doi.org/10.6009/jjrt.66.201
https://doi.org/10.6009/jjrt.66.201
Autor:
Hidekazu Kawashima, Yutaka Fujiki, Nagara Tamaki, Songji Zhao, Akiyoshi Kinda, Nobutoku Motomura, Naoki Kubo, Tohru Shiga, Yuji Kuge, Chietsugu Katoh
Publikováno v:
Annals of Nuclear Medicine. 19:633-639
Small animal imaging has recently been focused on basic nuclear medicine. We have designed and built a small animal SPECT imaging system using a semiconductor camera and a newly designed collimator. We assess the performance of this system for small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df0640675bb6fd3f3a1f7757fe439e32
https://doi.org/10.1007/bf02985059
https://doi.org/10.1007/bf02985059
Autor:
Akiyoshi Kinda, Yasuyuki Takahashi, Yoshifumi Sugawara, Teruhito Mochizuki, Hiroshi Higashino, Kenya Murase
Publikováno v:
Annals of Nuclear Medicine. 18:137-143
One of the main factors contributing to the accuracy of attenuation correction for SPECT imaging using transmission computed tomography (TCT) with an external gamma-ray source is the radionuclide count. To reduce deterioration of TCT images due to in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c867419380974cfc9d1893250ee183fa
https://doi.org/10.1007/bf02985104
https://doi.org/10.1007/bf02985104
Autor:
Yuji Kuge, Akiyoshi Kinda, Nagara Tamaki, Naoki Kubo, Chietsugu Katoh, Nobutoku Motomura, Songji Zhao
Publikováno v:
International Congress Series. 1264:275-279
We have developed a pinhole collimator for small animal imaging using dual-isotopes, such as gamma and positron emitters. A lead cylinder containing a pinhole was placed around the subject (a small animal). The cylinder was equipped with a non-collim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18a14a7532d1fe4521dda407f5f9c31a
http://hdl.handle.net/2115/14713
http://hdl.handle.net/2115/14713
Autor:
Yasuyuki Takahashi, Hiroshi Higashino, Yoshifumi Sugawara, Teruhito Mochizuki, Kenya Murase, Akiyoshi Kinda
Publikováno v:
Annals of Nuclear Medicine. 17:525-530
Filtered back projection (FBP) method, maximum likelihood-expectation maximization(ML-EM) method, and ordered subsets-expectation maximization (OS-EM) method are currently used for reconstruction of SPECT images in clinical studies. In the ML-EM meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c172ec17fd1813f225d6991eaae12d3a
https://doi.org/10.1007/bf03006664
https://doi.org/10.1007/bf03006664
Autor:
Yasuyuki, Takahashi, Kenya, Murase, Teruhito, Mochizuki, Yoshifumi, Sugawara, Hisato, Maeda, Akiyoshi, Kinda
Publikováno v:
Journal of nuclear medicine technology. 35(1)
Collimators are used for the improvement of information about the positions of sources by limiting the incidence direction of gamma-rays and characteristic x-rays to detectors. In this study, we attempted to improve the spatial resolution of (201)Tl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a641c3cf934ed997b5a981b4e67f9ffc
https://pubmed.ncbi.nlm.nih.gov/17337655
https://pubmed.ncbi.nlm.nih.gov/17337655
Autor:
Kenya Murase, Yoshifumi Sugawara, Akiyoshi Kinda, Yasuyuki Takahashi, Teruhito Mochizuki, Hiroshi Higashino
Publikováno v:
Annals of nuclear medicine. 18(7)
Purpose: In attenuation correction of ECT images by transmission CT (TCT) with an external99mTc y-ray source, simultaneous TCT/ECT data acquisition is difficult, when the same radionuclide such as99mTc-tetrofosmin or99mTc-GSA is used as the tracer. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b14d7b03322eb15cbcf3b2f19957f7d8
https://pubmed.ncbi.nlm.nih.gov/15586632
https://pubmed.ncbi.nlm.nih.gov/15586632
Autor:
Hisato, Maeda, Noriyasu, Yamaki, Takahiro, Natsume, Kan, Takeda, Satoru, Hasebe, Akiyoshi, Kinda, Nobuatsu, Motomura
Publikováno v:
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics. 24(2)
Single photon emission computed tomography (SPECT) is widely used for Nuclear Medicine. The low spatial resolution is mainly due to the limited collimator resolution. We have developed ordered subsets-expectation maximization (OS-EM) algorithm incorp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::588a887009986b9fc721e178e2f38a7d
https://pubmed.ncbi.nlm.nih.gov/15383710
https://pubmed.ncbi.nlm.nih.gov/15383710